Low energy consumption and high extrusion output pvc-m pipe composition

Abstract

The invention belongs to the field of a polymer processing material, and mainly relates to a PVC-M (polyvinyl chloride) pipe composition with low energy consumption and high output capacity. The PVC-M pipe composition is prepared from the following components in parts by weight: 100 parts of PVC resin, 3-7 parts of processed modified resin, 4.5-8.0 parts of heat stabilizer, 6-12 parts of flexibilizer, 0.5-1.0 part of hindered phenol antioxidant, 1.0-2.0 parts of lubricating agent, 1-5 parts of filler, and 0-2 parts of coloring agent. A large-caliber pipe and a small-caliber pipe produced by the PVC-M pipe composition with low energy consumption and high output capacity disclosed by the invention have low extruder current and high pulling speed; and the problems of difficult extrusion, low yield and high energy consumption in the production process of the PVC-M pipe are solved.

Description

technical field

[0001] The invention belongs to a PVC-M pipe composition with low energy consumption and high extrusion output, and belongs to the field of polymer processing materials. Background technique

[0002] With the extensive use of PVC-U pipes, its brittle shortcomings are also exposed, which greatly limits its application in many fields that have certain requirements for impact. Therefore, in recent years, domestic PVC manufacturers have begun to produce high-impact polyvinyl chloride pipes (ie, PVC-M pipes). PVC-M pipes have excellent impact resistance while having the strength of PVC-U. At present, the impact modifiers used for PVC-M pipes in China are MBS, CPE, and impact-resistant ACR. However, the addition of a large amount of impact modifier increases the viscosity of the material system, making it more difficult to extrude PVC-M pipes, resulting in higher current and higher energy consumption during extrusion. In particular, the extrusion viscosity of MBS...

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